Chapter V Disassembly & Repair
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3000r/min, Load with 8Ω, I≥8.0A；
Charging coil resistance: 0.23±10%Ω
2. In the case of detecting the output of the charging coil, check the voltage of the battery (generally in 12v~ 12.4V),
start the engine, the multimeter is placed in the dc file, and then the voltage of the battery, If the voltage is less than
13V.please replace the pressure rectifier.
Regulator Check
Switch the multimeter to diode: The red pen connects C and D respectively, The black pen by A, Diode forming
characteristic, The pressure drop value is 0.5V± 10%;The red pen is connected with B, and the black pen is connected
with C and D respectively, without pressure drop; B short connect with the housing, pressure drop value is 0.
Multimeter to 200 k Ω resistance: Red pen for A, black pen for B, resistance（10±5）MΩ; Red pen for B, black pen for
A, resistance＞10MΩ
NOTICE
1. There are a number of important precautions that are musts when servicing electrical systems.
Learn and observe all the rules below.
2. Do not reverse the battery lead connections. This will burn out the diodes in the electrical parts.
3. Always check battery condition before condemning other parts of an electrical system. A fully
charged battery is a must for conducting accurate electrical system tests.
4. The electrical parts should never be struck sharply, as with a hammer, or allowed to fall on a
hard surface. Such a shock to the parts can damage them.
5. To prevent damage to electrical parts, do not disconnect the battery leads or any other electrical
connections when the engine switch is on, or while the engine is running.
6. Take care not to short the leads that the directly connected to the battery positive (+) terminal to
the chassis ground.
7. Troubles may involve one or in some cases all items. Never replace a defective part without
determining what CAUSED the failure. If the failure was brought on by some other item or items,
they too must be repaired or replaced, or the replacement part will soon fail again.
8. Make sure all connectors in the circuit are clean and tight, and examine wires for signs of
burning, fraying, etc. Poor wires and bad connections will affect electrical system operation.
9. Measure coil and winding resistance when the part is cold (at room temperature).
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